Double mesh balloon catheter device

Abstract

The double mesh balloon catheter device comprises a catheter having a proximal end and a distal end, a double tubular mesh assembly having a proximal end and a distal end, being mounted to the distal end of the catheter and having an outer tubular mesh and an inner tubular mesh. An actuating mechanism is coupled to the proximal end of the catheter and extends through the catheter to the double tubular mesh assembly for moving the distal end thereof to effect axial contraction of the double tubular mesh assembly. Another actuating mechanism is coupled to the proximal end of the catheter and extends through the catheter to the double tubular mesh assembly for causing rotation of the inner tubular mesh relative to the outer tubular mesh.

I claim: 
     
       1. A double mesh balloon catheter device comprising: a catheter having a proximal end and a distal end;   a double tubular mesh assembly having a proximal end and a distal end, being mounted to the distal end of said catheter and comprising an outer tubular mesh and an inner tubular mesh; and   actuating means coupled to the proximal end of the catheter and extending thorough the catheter to the double tubular mesh assembly for moving the distal end thereof to effect axial contraction of the double tubular mesh assembly.   
     
     
       2. The device of claim 1 wherein said actuating means comprises a control wire extending axially through said double tubular mesh assembly and said catheter and an actuating mechanism coupled to the proximal end of said catheter, said control wire having a proximal end coupled to said actuating mechanism and a distal end connected to the distal end of said double tubular mesh assembly. 
     
     
       3. The device of claim 1 includes further actuating means comprising an elongate member within said catheter and said double tubular mesh assembly and fixed to the distal end of said double tubular mesh assembly and a further actuating mechanism coupled to the proximal end of said catheter and having a proximal end of said elongate member coupled thereto. 
     
     
       4. The device of claim 3 wherein said elongate member is a flush tube which is connected to the distal end of said double tubular mesh assembly, which has a side hole therein opening into the double tubular mesh assembly and which is coupled at its proximal end to a source of flushing fluid. 
     
     
       5. The device of claim 3 wherein said double tubular mesh assembly includes an end cap to which the distal end of said outer tubular mesh is connected, a bearing rotatably mounted in said end cap, said elongate member being coupled to said bearing, and means at the proximal end of said device coupled to said elongate member for rotating same to rotate said inner tubular mesh within said outer tubular mesh. 
     
     
       6. The device of claim 5 wherein said bearing has a spline opening therein and the distal end of said elongate member has a spline formation received and fixed within said spline opening in said bearing. 
     
     
       7. The device of claim 5 wherein said elongate member is hollow so as to form a flush tube and has a side hole in the distal end portion thereof for ejecting flushing fluid into the double tubular mesh assembly. 
     
     
       8. The device of claim 7 including means for rotatably mounting a proximal end portion of said flush tube and means for supplying flushing liquid to said rotatably mounted proximal end portion of said flush tube. 
     
     
       9. The device of claim 5 wherein said elongate member extends through said cap member and a cutting element is mounted to the distal end of said elongate member extending forwardly of said double tubular mesh assembly. 
     
     
       10. The device of claim 3 including a collar at the distal end of said catheter to which the proximal end of said outer tubular mesh is connected, a bearing mounted in said collar and said elongate member extending slidably through said bearing. 
     
     
       11. The device of claim 10 wherein said elongate member has a spline formation thereon which extends through a mating spline opening in said bearing mounted in said collar. 
     
     
       12. The device of claim 1 including means for connecting a drainage tube to the proximal end of said catheter whereby debris and fluid entering into the double mesh assembly can be withdrawn or evacuated through said catheter and said drainage tube. 
     
     
       13. A double mesh balloon catheter device comprising: a catheter having a proximal end and a distal end;   a double tubular mesh assembly having a proximal end and a distal end, being mounted to the distal end of said catheter and having an outer tubular mesh and an inner tubular mesh rotatably journaled within said outer tubular mesh; and   actuating means coupled to the proximal end of the catheter and including means extending through the catheter to the double tubular mesh assembly and connected to said inner tubular mesh, said actuating means being operable for causing rotation of the inner tubular mesh relative to the outer tubular mesh.   
     
     
       14. The device of claim 13 wherein said actuating means includes an elongate member within said catheter and said tubular mesh assembly and rotatably journaled to the distal end of said double tubular mesh assembly and an actuating mechanism coupled to the proximal end of said catheter and connected to the proximal end of said elongate member for rotating said elongate member to rotate said inner tubular mesh within said outer tubular mesh. 
     
     
       15. The device of claim 14 wherein said double tubular mesh assembly includes an end cap to which the distal end of said outer tubular mesh is connected, a bearing rotatably mounted in said end cap, said elongate member being coupled to said bearing. 
     
     
       16. The device of claim 15 wherein said bearing has a spline opening therein and the distal end of said elongate member has a spline formation received and fixed within said spline opening in said bearing. 
     
     
       17. The device of claim 15 wherein said elongate member is hollow so as to form a flush tube and has a side hole in the distal en portion thereof for ejecting flushing fluid into the double tubular mesh assembly. 
     
     
       18. The device of claim 17 including means for rotatably mounting a proximal end portion of said flush tube and means for supplying flushing liquid to said rotatably mounted proximal end portion of said flush tube. 
     
     
       19. The device of claim 15 wherein said elongate member extends through said cap member and a cutting element is mounted to the distal end of said elongate member extending forwardly of said double tubular mesh assembly. 
     
     
       20. The device of claim 13 including a collar at the distal end of said catheter to which the proximal end of said outer tubular mesh is connected, a bearing mounted in said collar and said elongate member extending slidably through said bearing. 
     
     
       21. The device of claim 20 wherein said elongate member has a spline formation thereon which extends through a mating spline opening in said bearing mounted in said collar. 
     
     
       22. The device of claim 13 including means for connecting a drainage tube to the proximal end of said catheter whereby debris and fluid entering into the double mesh assembly can be withdrawn or evacuated through said catheter and said drainage tube. 
     
     
       23. The device of claim 13 including said actuating means coupled to the proximal end of the catheter and extending through the catheter to the double tubular mesh assembly for moving the distal end thereof to effect axial contraction of the double tubular mesh assembly. 
     
     
       24. The device of claim 13 including means located at said double tubular mesh assembly for heating the outer mesh. 
     
     
       25. The device of claim 13 including means located at said double tubular mesh assembly for heating the inner mesh.